Problem: You are 35 Year's old today and are considering your retirement needs. You expect to retire at age 65 and your actuarial tables suggest that you will live to be 100. You want to move to the Bahamas when you retire. You estimate that it will cost $300,000 to make the move on your 65 birthday and that your living expenses will be $30,000 a year( starting at the end of year 66 and continuing through the end of year 100) after that.

a) how much will you need to have saved by your retirement date to be able to afford this course of action?

b) you already have $50,000 in savings. If you can invest money, tax free, at 8% a year how much would you need to save each year for the next 30 years to be able to afford this retirement plan?

c) if you did not have any current savings and do not expect to be able to start saving money for the next five years how much would you have to set aside each year after that to be able to afford this retirement plan?

I see a solution for this exact problem already uploaded however I don't just want a solution I want to see the actual work to solve the problem. I want to understand how to do it. Also a classmate of mine says the answers are not correct in the solution that has already been posted.